BUMPn.
[L. bombus, and Eng. pomp., from swelling, thrusting out.]
1. A swelling or protuberance.
2. A thump; a heavy blow.
BUMPv.i.
To make a loud, heavy or hollow noise, as the bittern. It is also written boom.
BUMPv.t.
To strike as with or against any thing large or solid, as to bump the head against a wall; to thump.